New IFC facet-based selector syntax

T by theoryshaw on 12 Apr 2024 #

IfcFurniture, PredefinedType="CHAIR"

This doesn't seem to work. Am i missing something?

In this scenario, the instance is taking on the Type's PredefinedType.

B by bruno_perdigao on 12 Apr 2024, edited 12 Apr 2024 # +2 votes

I don't know if I understood correctly, but try IfcFurniture, query:predefined_type=CHAIR

Remember to remove the equal sign here:

Does that work?

T by theoryshaw on 12 Apr 2024, edited 12 Apr 2024 #

yes, that works! Thanks @bruno_perdigao

...

Intuitively, it seems like the other way should work too... since it's an 'Attribute'. ¯\_(ツ)_/¯

A by Andrej730 on 19 Apr 2024 # +2 votes

@theoryshaw said:

yes, that works! Thanks @bruno_perdigao

...

Intuitively, it seems like the other way should work too... since it's an 'Attribute'. ¯\_(ツ)_/¯

makes sense, it should work both ways after this commit

S by steverugi on 23 Apr 2024, edited 23 Apr 2024 #

Hi @Andrej730

@martin said:

Or from BBIM UI:

I am trying to implement RICSclassification (NRM1 and 2)

how would I catch something like

#105=IFCCLASSIFICATIONREFERENCE($,'1.1.3.1','Lowest floor construction',#66,$,$);

or any other classified element of which I know the code (in this case '1.1.3.1'), or its description

since the BoQ does not export classification (yet?) it would be useful to do it through spreadsheet

thanks

EDIT

please disregard my request, I figured it out

for those who are looking for the same:

as selector for spreadsheet export to csv:

classification.Name returns 'Lowest floor construction'

classification.Identification returns '1.1.3.1'

in Search use the "Classification" filter and apply the Identification code in the cell:

cheers

A by Andrej730 on 23 Apr 2024 # +1 votes

@steverugi said:

how would I catch something like

#105=IFCCLASSIFICATIONREFERENCE($,'1.1.3.1','Lowest floor construction',#66,$,$);

or any other classified element of which I know the code (in this case '1.1.3.1'), or its description

"IfcClassificationReference, Description=description" or ""IfcClassificationReference, Identification=test_code"?

S by steverugi on 1 May 2024, edited 1 May 2024 #

Hi @Andrej730

please where in the UI you use the following?

"IfcClassificationReference, Description=description" or ""IfcClassificationReference, Identification=test_code"?

do you know what to use in a cost schedule as query? It would be very useful to select classified elements in a BoQ

IfcSlab, classification="1.1.1.1.11" works in Grouping and Filtering > Search but when used in a cost schedule it does not return anything

thanks

EDIT

for some reason IfcSlab, classification="1.1.1.1.11" works now in a .csv cost schedule to automate BoQ QTO extraction, I'm still curious to know the use case of IfcClassificationReference, Description.. though, cheers

B by bernd on 22 May 2024, edited 22 May 2024 #

I am faceing a problem ...

ifcbimtester uses doublequotes to mark values ... https://github.com/IfcOpenShell/IfcOpenShell/blob/69c197c1a4f047791befbae11e890be64026b7e7/src/ifcbimtester/bimtester/features/steps/classification/en.py

I started to use a query in ifcbimtester as value (which is very very cool :-)) I need to use double quotes ATM to mark it as a value. But if inside the query I need to quote something I can not use double quotes I would need to use a single quote, but single quotes do not work in the querries.

The other way would be to switch in ifcbimtester to use single quotes for the values. Than the query would be in single quotes and I could use double quotes inside the query. But this is in the contrary to all ifcbimtester.

Thus ... would it be possible to support single quotes inside the querys as well.

cheers bernd

M by Moult on 22 May 2024 #

Couldn't you just escape the quotes?

B by bernd on 22 May 2024, edited 22 May 2024 #

like this ... ?

from ifcopenshell.util import selector

# query = "IfcWall, AllplanAttributes.Status=Neubau, material=Dämmung, Name='Dämmung eingelegt'"  # error

query = "IfcWall, AllplanAttributes.Status=Neubau, material=Dämmung, Name=\"Dämmung eingelegt\""  # works

eles = ifcopenshell.util.selector.filter_elements(ifcfile, query)

works for the query. I will give it a try in ifcbimtester. But since ifcbimtester is human readable any IT-specific character does cut the peoples number who do understand the text into a half ;-)

BTW: this query system is very very very cool. It replaces tons of lines of code I have made over years by a simple statement. :-)

B by bernd on 22 May 2024, edited 22 May 2024 #

@Moult said:

Couldn't you just escape the quotes?

no it does not work in ifcbimtester ... but nevermind ...

features:

Szenario: Layernames test

 #* All "{ifcos_query}" elements have a layer named "{layer_name}"

 * All "IfcColumn, AllplanAttributes.Status=Neubau, material=FertigelementBeton, Name=Stuetze" elements have a layer named "_HB_N_BTL_FB_Stuetze"

 * All "IfcWall, AllplanAttributes.Status=Neubau, material=\"Fertigelement Beton\", Name=Wandschicht" elements have a layer named "_HB_N_BTL_FB_Wand"

works:

 All "IfcColumn, AllplanAttributes.Status=Neubau, material=FertigelementBeton, Name=Stuetze" elements have a layer named "_HB_N_BTL_FB_Stuetze" 162 eles, 0.68s

does not work:

All "IfcWall, AllplanAttributes.Status=Neubau, material=\"Fertigelement Beton\", Name=Wandschicht" elements have a layer named "_HB_N_BTL_FB_Wand" 162 eles, 0.01s



File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\behave\model.py", line 1329, in run

match.run(runner.context)

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\behave\matchers.py", line 98, in run

self.func(context, *args, **kwargs)

File "C:\Users\BHA\AppData\Roaming\FreeCAD\Mod\bimtester\code_bimtester\bimtester\features\steps\layer_and_style\en.py", line 40, in step_impl

ifcos_query_has_following_layer_name(

File "C:\Users\BHA\AppData\Roaming\FreeCAD\Mod\bimtester\code_bimtester\bimtester\features\steps\layer_and_style\en.py", line 152, in ifcos_query_has_following_layer_name

target_elements = ifcopenshell.util.selector.filter_elements(IfcStore.file, target_ifcos_query)

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\ifcopenshell\util\selector.py", line 311, in filter_elements

transformer.transform(filter_elements_grammar.parse(query))

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\lark.py", line 645, in parse

return self.parser.parse(text, start=start, on_error=on_error)

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parser_frontends.py", line 96, in parse

return self.parser.parse(stream, chosen_start, **kw)

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parsers\earley.py", line 266, in parse

to_scan = self._parse(lexer, columns, to_scan, start_symbol)

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parsers\xearley.py", line 146, in _parse

to_scan = scan(i, to_scan)

File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parsers\xearley.py", line 119, in scan

raise UnexpectedCharacters(stream, i, text_line, text_column, {item.expect.name for item in to_scan},

lark.exceptions.UnexpectedCharacters: No terminal matches 'B' in the current parser context, at line 1 col 68



Status=Neubau, material=\"Fertigelement Beton\", Name=Wandschicht

^

Expected one of:

* PLUS

* COMMA

M by Moult on 23 May 2024 #

I haven't looked at the BIMTester codebase in ages and I have no idea what it supports or doesn't support anymore. Can you try printing to check exactly what behave is parsing and sending off to the filter_elements function? That can help narrow it down whether the problem is with behave and quotes, or BIMTester and quotes, or filter_elements itself.

B by bernd on 23 May 2024 #

The problem is in behave because the standard parse step matcher can not parse a " inside a step parameter which is marked by "{}" ...

I found a (may be not smart, but working) work around which I will use ATM. Before sending the query to IfcOpenShell I replace ' by " like this ...

from ifcopenshell.util import selector

query = "IfcWall, AllplanAttributes.Status=Neubau, material=Dämmung, Name='Dämmung eingelegt'".replace("'",'"')  # works

eles = ifcopenshell.util.selector.filter_elements(ifcfile, query)

This way I do not need to change anything in ifcbimtester and do not need to investigate more ATM.

cheers bernd

A by Andrej730 on 23 May 2024, edited 23 May 2024 # +1 votes

@steverugi said:

I'm still curious to know the use case of IfcClassificationReference, Description.. though, cheers

You can use it in scripts if you want to get all matching IfcClassificationReferences or in Spreadsheet Export if you want to export list of all used classification references with certain description (though you won't be able import it back, I think, as importing .csv typically requires guid).

If you want to get list of all elements that has a refernce with some description then I don't think it's possible - when you do IfcSlab, classification="1.1.1.1.11" it checks all references Name "1.1.1.1.11" (so you can use the same syntax to match by reference name) and then it checks references' Identification but never checks Description.

B by bernd on 6 Jun 2024, edited 6 Jun 2024 #

I have problems on quantities ... I am not able to use any regex or a * to filter multiple quantity values or alle object with the quantity attached

cheers bernd

# works ...

from ifcopenshell.util import selector

query = "IfcWall"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, material=Ortbeton"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, material=Backstein, Qto_WallBaseQuantities.Dicke='0.175'".replace("'",'"')

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = 'IfcWall, material=Ortbeton, Qto_WallBaseQuantities.Dicke="0.28"'

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, AllplanAttributes.Allright_Bauteil_ID=/\d+/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, AllplanAttributes.Allright_Bauteil_ID=/0*/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, AllplanAttributes.Allright_Bauteil_ID=/[a-zA-Z_0-9]+/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))


# none of them works

query = "IfcWall, material=Ortbeton, Qto_WallBaseQuantities.Dicke=/\d+\.\d+/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, material=Ortbeton, Qto_WallBaseQuantities.Dicke=/[0-9]\.[0-9]{3}/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, Qto_WallBaseQuantities.Dicke=/\d+/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, Qto_WallBaseQuantities.Dicke=/[a-zA-Z_0-9]+/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))




>>> # works ...

>>> from ifcopenshell.util import selector

>>> query = "IfcWall"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

61

>>> query = "IfcWall, material=Ortbeton"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

25

>>> query = "IfcWall, material=Backstein, Qto_WallBaseQuantities.Dicke='0.175'".replace("'",'"')

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

36

>>> query = 'IfcWall, material=Ortbeton, Qto_WallBaseQuantities.Dicke="0.28"'

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

25

>>> query = "IfcWall, AllplanAttributes.Allright_Bauteil_ID=/\d+/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

61

>>> query = "IfcWall, AllplanAttributes.Allright_Bauteil_ID=/0*/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

61

>>> query = "IfcWall, AllplanAttributes.Allright_Bauteil_ID=/[a-zA-Z_0-9]+/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

61

>>> 

>>> 

>>> # none of them works

>>> query = "IfcWall, material=Ortbeton, Qto_WallBaseQuantities.Dicke=/\d+\.\d+/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

Traceback (most recent call last):

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 124, in _call_userfunc

    return f(children)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\ifcopenshell\util\selector.py", line 574, in property

    self.elements = set(filter(filter_function, self.elements))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\ifcopenshell\util\selector.py", line 553, in filter_function

    return self.compare(element_value, comparison, value)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\ifcopenshell\util\selector.py", line 732, in compare

    result = bool(value.match(element_value)) if element_value is not None else False

TypeError: expected string or bytes-like object



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "<input>", line 1, in <module>

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\ifcopenshell\util\selector.py", line 311, in filter_elements

    transformer.transform(filter_elements_grammar.parse(query))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 161, in transform

    return self._transform_tree(tree)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 156, in _transform_tree

    children = list(self._transform_children(tree.children))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 146, in _transform_children

    res = self._transform_tree(c)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 156, in _transform_tree

    children = list(self._transform_children(tree.children))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 146, in _transform_children

    res = self._transform_tree(c)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 156, in _transform_tree

    children = list(self._transform_children(tree.children))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 146, in _transform_children

    res = self._transform_tree(c)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 156, in _transform_tree

    children = list(self._transform_children(tree.children))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 146, in _transform_children

    res = self._transform_tree(c)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 157, in _transform_tree

    return self._call_userfunc(tree, children)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\visitors.py", line 128, in _call_userfunc

    raise VisitError(tree.data, tree, e)

lark.exceptions.VisitError: Error trying to process rule "property":



expected string or bytes-like object

>>>

attached the file ...

M by Moult on 7 Jun 2024 #

Isn't that because you're using regex on non-strings?

B by bernd on 7 Jun 2024 #

@Moult said:

Isn't that because you're using regex on non-strings?

That explains a lot.

#97=IFCQUANTITYLENGTH('Dicke',$,$,0.28);

Than I need to ask the question different.

How specify I non string values if it is not the exact value I seacht for?
How do I find all elements with a special quantity assigned?
How do I find all elements with a special quantity with a special value. lets say in may case >= 0.20?

B by bernd on 7 Jun 2024, edited 7 Jun 2024 #

ahh ... found it ... it's so easy ... I have no idea why I just not tried what I do in Python all time. Probably the need of the quotes confused me at all.

query = 'IfcWall, Qto_WallBaseQuantities.Dicke>=0'

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = 'IfcWall, Qto_WallBaseQuantities.Dicke<"0.28"'

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = 'IfcWall, Qto_WallBaseQuantities.Dicke>="0.28"'

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))





 >>> 

 >>> query = 'IfcWall, Qto_WallBaseQuantities.Dicke>=0'

 >>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

 61

 >>> query = 'IfcWall, Qto_WallBaseQuantities.Dicke<"0.28"'

 >>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

 36

 >>> query = 'IfcWall, Qto_WallBaseQuantities.Dicke>="0.28"'

 >>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

 25

 >>>

B by bernd on 11 Jun 2024, edited 11 Jun 2024 #

next filter problem ...

file from this post https://community.osarch.org/discussion/comment/20854/#Comment_20854

# works great :-)

from ifcopenshell.util import selector

query = "IfcWall, FBJ_Properties.HB_Std_Gewerk=Betonarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, FBJ_Properties.HB_Std_Gewerk=Mauerarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

but use the ! does not seam to work with properties ...

# works not ... 

query = "IfcWall, ! FBJ_Properties.HB_Std_Gewerk=Betonarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

Error ...

>>> query = "IfcWall, ! FBJ_Properties.HB_Std_Gewerk=Betonarbeiten"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

Traceback (most recent call last):

  File "<input>", line 1, in <module>

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\ifcopenshell\util\selector.py", line 311, in filter_elements

    transformer.transform(filter_elements_grammar.parse(query))

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\lark.py", line 645, in parse

    return self.parser.parse(text, start=start, on_error=on_error)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parser_frontends.py", line 96, in parse

    return self.parser.parse(stream, chosen_start, **kw)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parsers\earley.py", line 266, in parse

    to_scan = self._parse(lexer, columns, to_scan, start_symbol)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parsers\xearley.py", line 146, in _parse

    to_scan = scan(i, to_scan)

  File "C:\0_BHA_privat\progr\FreeCAD\FreeCAD_0.21.xxxxx\bin\lib\site-packages\lark\parsers\xearley.py", line 119, in scan

    raise UnexpectedCharacters(stream, i, text_line, text_column, {item.expect.name for item in to_scan},

lark.exceptions.UnexpectedCharacters: No terminal matches 'F' in the current parser context, at line 1 col 12



IfcWall, ! FBJ_Properties.HB_Std_Gewerk=Betonarbeit

           ^

Expected one of: 

    * __ANON_0

    * __ANON_3



>>>

B by bernd on 11 Jun 2024, edited 11 Jun 2024 # +1 votes

once again ... just use Python relational operator ...

# works great :-)

from ifcopenshell.util import selector

query = "IfcWall, FBJ_Properties.HB_Std_Gewerk=Betonarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, FBJ_Properties.HB_Std_Gewerk=Mauerarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, FBJ_Properties.HB_Std_Gewerk!=Betonarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, FBJ_Properties.HB_Std_Gewerk!=Mauerarbeiten"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))




>>> 

>>> query = "IfcWall, FBJ_Properties.HB_Std_Gewerk=Betonarbeiten"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

32

>>> query = "IfcWall, FBJ_Properties.HB_Std_Gewerk=Mauerarbeiten"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

29

>>> query = "IfcWall, FBJ_Properties.HB_Std_Gewerk!=Betonarbeiten"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

29

>>> query = "IfcWall, FBJ_Properties.HB_Std_Gewerk!=Mauerarbeiten"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

32

>>>

sometimes it needs a post to solve the problem myself, I have no idea why , sorry for the noise ...

J by John on 11 Jun 2024 #

@bernd it's far from noise, it's a really helpful guide for people like me trying to learn and understand. More, please.

B by bernd on 11 Sep 2024, edited 11 Sep 2024 # +3 votes

I got a ifc from a landscape architekt of 180 MB containing probably 95 % data in trees which I do not need at all. The idea was to use BBIM to create a new ifc without the trees. Means filter all element except all the trees ... This was what I came up with ...

from ifcopenshell.util import selector

query = "IfcBuildingElement"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcBuildingElement, Name!=/^Platane/, Name!=/^Bush/, Name!=/^Willow/, Name!=/^Black_Maple/, Name!=/^Nordmann/, Name!=/^Elm_Tree/, Name!=/^Chestnut_Tree/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))




>>> 

>>> from ifcopenshell.util import selector

>>> query = "IfcBuildingElement"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

724

>>> query = "IfcBuildingElement, Name!=/^Platane/, Name!=/^Bush/, Name!=/^Willow/, Name!=/^Black_Maple/, Name!=/^Nordmann/, Name!=/^Elm_Tree/, Name!=/^Chestnut_Tree/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

576

>>>

In BBGui run IFCPatch by the use of the filter from above and get a ifc file of 11.4 MB ... :-)

IfcBuildingElement, Name!=/^Platane/, Name!=/^Bush/, Name!=/^Willow/, Name!=/^Black_Maple/, Name!=/^Nordmann/, Name!=/^Elm_Tree/, Name!=/^Chestnut_Tree/

B by bernd on 11 Sep 2024 # +3 votes

found a even simpler way to filter. It works inside one regex ...

from ifcopenshell.util import selector

query = "IfcBuildingElement"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcBuildingElement, Name!=/^Platane/, Name!=/^Bush/, Name!=/^Willow/, Name!=/^Black_Maple/, Name!=/^Nordmann/, Name!=/^Elm_Tree/, Name!=/^Chestnut_Tree/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcBuildingElement, Name!=/^Platane|^Bush|^Willow|^Black_Maple|^Nordmann|^Elm_Tree|^Chestnut_Tree/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

results in:

>>> 

>>> from ifcopenshell.util import selector

>>> query = "IfcBuildingElement"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

724

>>> query = "IfcBuildingElement, Name!=/^Platane/, Name!=/^Bush/, Name!=/^Willow/, Name!=/^Black_Maple/, Name!=/^Nordmann/, Name!=/^Elm_Tree/, Name!=/^Chestnut_Tree/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

576

>>> query = "IfcBuildingElement, Name!=/^Platane|^Bush|^Willow|^Black_Maple|^Nordmann|^Elm_Tree|^Chestnut_Tree/"

>>> len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

576

>>>

B by bernd on 12 Sep 2024, edited 12 Sep 2024 #

next problem to solve ...

"material" filters Materials, "Name" filters by Name ...

What do I need to filter Layer ? I tried "Layer" and "layer" but both did not return something reasonable ...

from IFC ...

#113754=IFCPRESENTATIONLAYERASSIGNMENT('115 Liftanlagen.002',$,(#25008,#25402,#25403,#25404,#25405,#25406,#25407),$);

B by bernd on 12 Sep 2024, edited 12 Sep 2024 #

another one ...

A property name does have a Space inside. I am not able to filterfor this property values ... Nothing of this works? BTW (False is really a String in this IFC ... bang ... )

from ifcopenshell.util import selector

query = "IfcWall, Architekt.Tragendes Bauteil=/^FALSE/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, Architekt.'Tragendes Bauteil'=/^FALSE/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

query = "IfcWall, 'Architekt.Tragendes Bauteil'=/^FALSE/"

len(ifcopenshell.util.selector.filter_elements(ifcfile, query))

gives an Error in all three cases ...

from IFC ...

#2833771=IFCPROPERTYSINGLEVALUE('Tragendes Bauteil',$,IFCLABEL('FALSE'),$);